Pan-Slavism, 19th-century movement that recognized a common ethnic background among the various Slav peoples of eastern and east central Europe and sought to unite those peoples for the achievement of common cultural and political goals. The Pan-Slav movement originally was formed in the first half of the 19th century by West and South Slav intellectuals, scholars, and poets, whose peoples were at that time also developing their sense of national identity. The Pan-Slavists engaged in studying folk songs, folklore, and peasant vernaculars of the Slav peoples, in demonstrating the similarities among them, and in trying to stimulate a sense of Slav unity. As such activities were conducted mainly in Prague, that city became the first Pan-Slav centre for studying Slav antiquities and philology.

The Pan-Slavism movement soon took on political overtones, and in June 1848, while the Austrian Empire was weakened by revolution, the Czech historian František Palackýconvened a Slav congress in Prague. Consisting of representatives of all Slav nationalities ruled by the Austrians, the congress was intended to organize cooperative efforts among them for the purpose of compelling the Emperor to transform his monarchy into a federation of equal peoples under a democratic Habsburg rule.

Although the congress had little practical effect, the movement remained active, and by the 1860s it became particularly popular in Russia, to which many Pan-Slavs looked for leadership as well as for protection from Austro-Hungarian and Turkish rule. Russian Pan-Slavists, however, altered the theoretical bases of the movement. Adopting the Slavophile notion that western Europe was spiritually and culturally bankrupt and that it was Russia’s historic mission to rejuvenate Europe by gaining political dominance over it, the Pan-Slavists added the concept that Russia’s mission could not be fulfilled without the support of other Slav peoples, who must be liberated from their Austrian and Turkish masters and united into a Russian-dominated Slav confederation.

Although the Russian government did not officially support this view, some important members of its foreign department, including its representatives at Constantinople and Belgrade, were ardent Pan-Slavists and succeeded in drawing both Serbia and Russia into wars against the Ottoman Empire in 1876–77.

When efforts were made in the early 20th century to call new Pan-Slav congresses and revive the movement, the nationalistic rivalries among the various Slav peoples prevented their effective collaboration.